<?php
$form = new Core_Form();
$element = $form->createElement('text', 'email', array(
    'label'         => $this->getTranslation("Enter the recipient's email"),
    'value'         => $this->getData('email',   $this->data->get),
    'belongsTo'     => $this->getData('element', $this->data->get),
    'required'      => true,
    'filters'       => array('StringTrim'),
    'validators'    => array('EmailAddress'),
    'attribs'       => array('size' => 50),
    'errorMessages' => array('A valid email address is required'),
));
echo $element;